Gul Aysegul, Hruza Jakub, Yalcinkaya Fatma
Centre for Nanomaterials, Advanced Technology and Innovation, Technical University of Liberec, Studentska 1402/2, 46117 Liberec, Czech Republic.
Polymers (Basel). 2021 Mar 10;13(6):846. doi: 10.3390/polym13060846.
Membrane fouling is one of the main drawbacks encountered during the practical application of membrane separation processes. Cleaning of a membrane is important to reduce fouling and improve membrane performance. Accordingly, an effective cleaning method is currently of crucial importance for membrane separation processes in water treatment. To clean the fouling and improve the overall efficiency of membranes, deep research on the cleaning procedures is needed. So far, physical, chemical, or combination techniques have been used for membrane cleaning. In the current work, we critically reviewed the fouling mechanisms affecting factors of fouling such as the size of particle or solute; membrane microstructure; the interactions between membrane, solute, and solvent; and porosity of the membrane and also examined cleaning methods of microfiltration (MF) membranes such as physical cleaning and chemical cleaning. Herein, we mainly focused on the chemical cleaning process. Factors affecting the chemical cleaning performance, including cleaning time, the concentration of chemical cleaning, and temperature of the cleaning process, were discussed in detail. This review is carried out to enable a better understanding of the membrane cleaning process for an effective membrane separation process.
膜污染是膜分离过程实际应用中遇到的主要缺点之一。膜的清洗对于减少污染和提高膜性能至关重要。因此，一种有效的清洗方法目前对于水处理中的膜分离过程至关重要。为了清洗污染并提高膜的整体效率，需要对清洗程序进行深入研究。到目前为止，物理、化学或组合技术已被用于膜清洗。在当前的工作中，我们批判性地回顾了影响污染的机制，如颗粒或溶质的大小、膜微观结构、膜、溶质和溶剂之间的相互作用以及膜的孔隙率等污染因素，并研究了微滤（MF）膜的清洗方法，如物理清洗和化学清洗。在此，我们主要关注化学清洗过程。详细讨论了影响化学清洗性能的因素，包括清洗时间、化学清洗浓度和清洗过程的温度。进行这项综述是为了更好地理解膜清洗过程，以实现有效的膜分离过程。
